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IB/ipoib: Use cancel_delayed_work_sync when needed

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The work mcast_task can re-queue itself, so instead of doing
cancel && flush_workqueue, that still can leave a queued task
on the air, use cancel_delayed_work_sync.

Also, no need to use lock over the cancel, the original lock was
due to bit assignment setting (IPOIB_MCAST_RUN) that is not in use
anymore.

Signed-off-by: Erez Shitrit <erezsh@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Erez Shitrit 2017-07-12 10:40:25 +03:00 committed by Leon Romanovsky
parent edf3f301db
commit 6bdc8de2e8
1 changed files with 1 additions and 6 deletions
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drivers/infiniband/ulp/ipoib/ipoib_multicast.c
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@ -684,15 +684,10 @@ void ipoib_mcast_start_thread(struct net_device *dev)
int ipoib_mcast_stop_thread(struct net_device *dev)
{
struct ipoib_dev_priv *priv = ipoib_priv(dev);
unsigned long flags;
ipoib_dbg_mcast(priv, "stopping multicast thread\n");
spin_lock_irqsave(&priv->lock, flags);
cancel_delayed_work(&priv->mcast_task);
spin_unlock_irqrestore(&priv->lock, flags);
flush_workqueue(priv->wq);
cancel_delayed_work_sync(&priv->mcast_task);
return 0;
}